erosball.c File Reference

morphological binary erosion by a ball More...

Detailed Description

morphological binary erosion by a ball

Usage: erosball in.pgm r [dist] out.pgm

Description: Morphological binary erosion by a metric ball. This erosion is the dual of the dilatball operator, i.e. erosball(X) = inverse(dilatball(inverse(X))). The structuring element for this erosion is a ball (or a disc) of radius r. The erosion is computed by thresholding a distance map. The distance used depends on the optional parameter dist (default is 0) :

0: approximate euclidean distance
2: chamfer distance
4: 4-distance in 2d
8: 8-distance in 2d
6: 6-distance in 3d
18: 18-distance in 3d
26: 26-distance in 3d

Warning:: The input image in.pgm must be a binary image. No test is done.

Types supported: byte 2d, byte 3d

Category: morpho

Author:: Michel Couprie 2002

Example:

erosball cells 3 cells_erosball

cells cells_erosball

Generated on Fri Dec 17 11:59:37 2004 for Pink by

1.2.18